klundt



G. KLUNDT.

AIR PUMP.

APPLICATION FILED OCT. 16, ISH].

'1 ,309,528.. Patented J lily 8, 1919.

2 SHEETS-SHEET l.

(June/444301 G. KLUNDT.

AIR PUMP.

APPLICATION men on. 16. ms.

Patented July 8, 1919.

2 SHEETS-SHEET 2.

AV y f 26 TI": COLUMBIA "LANUQRAIII cu, WASHINGTON, IL c.

GEORGE KLUNDT, 0F STREETER, NORTH DAKOTA.

AIR-PUMP.

Application filed October 16,

T 0 all whom it may concern:

Be it known that I, Gnonen KLUNDT, a citizen of the United States, residing at Streeter, in the county of Stutsman and State of North Dakota, have invented new and useful Improvements in AirPumps, of which the following is a specification.

This invention relates to improvements in air pumps and aims to provide a simple and durable pump in which the maximum amount of energy is generated at a minimum cost.

An object of the present invention is to provide a series of pumps arranged in battery formation and connected to a single crank shaft which receives power impulses from each of the pumps in regular order, so that a constant source of energy is operating at all times to drive the shaft.

A particular novel feature of the invention resides in the construction and arrangement of the pump cylinders and plungers, which are arranged in pairs with intake and outlet valves communicating with each pair of cylinders, which act upon the crank shaft in unison.

Another novel feature of the invention resides in the manner of connecting each pair of cylinders with the crank shaft and of providing a guide for the same, so that the said plungers are maintained in proper alinement within the cylinders.

Other novel features of the invention will appear as the following description is read in connection with the accompanying drawings.

In the drawings Figure 1 is an elevation of a battery of air pumps embodying the present invention;

Fig. 2 is a vertical sectional view on the line 22 of Fig. 1;

Fig. 3 is a horizontal sectional view on the line 3-3 of Fig. 1;

Fig. 4c is an enlarged sectional view through one pair of cylinders;

Fig. 5 is a transverse sectional view of the same.

Referring to the drawings in detail and especially to Figs. 1 to 5 inclusive, there is illustrated an air pump of the vertical type. This pump includes a frame 10, which is mounted upon a base 11. The frame also includes a substantially U-shaped connecting bar 12, which connects the upright parts of the frame and bearings 13, within which is mounted a crank shaft 14;. Mounted upon Specification of Letters Patent.

Patented July 8, 1919.

1918. Sem'a1No.258,345.

one end of the crank shaft is a fly wheel 15 and upon the other end a pulley 16, from which power may be transferred from the shaft to any desired mechanism or machinery.

The cylinders of the pumps are arranged in pairs and are mounted upon a base 11, being bolted thereto as indicated at 17. Each pair of cylinders includes a casting 18, provided with parallel bores 19, a cylinder head 20 being bolted thereto. The cylinder head is provided with openings 23 for the passage of plungers 24, the openings through which the plungers pass being surrounded by a suitable packing gland 25. The lower end of each of the cylinders is provided with an intake port 26 which communicates with a common intake port 27, communication between each of the ports 26 and the port 27 being controlled by means of a check valve 28. The ports 26 of each pair of cylinders are connected through the medium of a port 29, which communicates with an outlet port 30, which is controlled by a check valve 31.

The upper ends of each pair of plungers 2i are connected through the medium of a cross head 32 and to this cross head is connected each end of a forked pitman 33, the opposite end of the pitman being connected to the crank shaft as shown at 34:.

Projecting upwardly from each cross head and between the forked end of the pitman 33, is a guide stem 35, which is guided in a bearing 86 carried by the U-shaped connecting bar 12. The plungers 2L are thus held in proper working alinement within the bores 19 of the cylinders.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is reserved to make such changes as fall Within the scope of the appended claims.

Having described thev invention, what is claimed is 1. An air pump embodying a plurality of pumps arranged in pairs, plungers for each of said pumps, a crank shaft, means for connecting each pair of plungers to the crank shaft, a valve controlled intake port for each of said cylinders, a communicating passage between said ports and anoutlet port communicating with said passage, whereby each pair of plungers will act simultaneously upon the crank shaft.

2. An air pump embodying a plurality of cylinders in pairs, plungers for each of said ously admitting air to and for simultaneously exhausting air from each pair of cylinders, a crank shaft, a forked pitman connecting each pair of plungers to the crank shaft and a guide stem projecting from each pair of plungers between the forked end of the pitman for holding the latter in proper alinement.

In testimony whereof I affix my signature.

GEORGE KLUN'DT.

cylinders, means for simultaneously admitting air to and exhausting air from each pair of cylinders, a crank shaft, a pitman connecting each pair of plungers to the crank 5 shaft and a guide stem projecting from each pair of plungers for holding the latterin proper alinement.

3. An air pump embodying a plurality of cylinders arranged in pairs, plungers for 10 each of said cylinders, means for simultane- Gopi'es of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

